EDITOR'S OPINION

Son of Darkseid and a big burly warrior with a occasional bit of daddy issues, so far he hasn't made that many appearances that would require voice acting but he has made a pretty good impression.
In Superfriends he was voiced by VA legend Frank Welker however it wasn't exactly his best handiwork. Its not really bad per say but it is rather strange to hear Kalibak with a fairly high very raspy voice, but lets just say when it comes to Frank Welker's handiwork on Superfriends I prefer his work as Darkseid.

However in Superman: The Animated Series (and Justice League) he was voiced by Michael Dorn whom quite frankly was perfect for the role. Michael Dorn's voice and performance for Kalibak was quite fitting and is another good example of how awesome the voice acting can be in the DCAU shows.

So as much as I am one of Frank Welker's fans I do have to give it to Michael Dorn here.

(Note: Michael Leon Wooley is now a direct 2nd place in my book, sure his work is still not as great as Michael Dorn but is still good nevertheless.)